Clinical efficacy of acetylcysteine combined with tetrandrine tablets on patients with silicosis and its effect on exercise tolerance and pulmonary function

Clinical efficacy of acetylcysteine combined with tetrandrine tablets in the treatment of silicosis was investigated to observe the exercise tolerance and pulmonary function of the patients. The clinical data of 248 cases of silicosis patients treated in Branch of Tai'an City Central Hospital were retrospectively analyzed in this study, including 116 cases with conventional therapy (control group), and 132 cases treated with acetylcysteine and tetrandrine tablets on the basis of conventional therapy (observation group). The chest tightness, chest pain, cough and sputum production were evaluated by the St. George Respiratory questionnaire (SGRQ); and side effects after treatment were recorded. Exercise tolerance was measured by 6-min walk test (6MWT) and pulmonary function was measured by pulmonary function instrument. The symptoms of chest tightness, chest pain, cough and sputum production in the observation group and the control group after 8 months of treatment were significantly lower than those before treatment (P<0.05), and that in the observation group after treatment was significantly higher than that in the control group (P<0.05). The incidence of side effects of the drug in the observation group was significantly lower than that in the control group (P<0.05). The 6MWT, forced vital capacity (FVC) and forced expiratory volume in 1 sec (FEV1) in the observation group and the control group after treatment were significantly higher than those before treatment (P<0.001); the 6MWT in the observation group after treatment was significantly higher than that in the control group (P<0.001). In conclusion, acetylcysteine combined with tetrandrine tablets on the basis of conventional therapy in treatment of silicosis is more effective than conventional therapy alone, which can also improve exercise tolerance, pulmonary function and clinical symptoms such as chest tightness, chest pain, cough, sputum production of silicosis patients, and is helpful for clinical application.